Cash register



C. W. GREEN CASH REGISTER Feb. 22, 1938.

Original Filed March 27, 1931 8 Sheets-Sheet 1 Iwdua His Attorney Feb.22, 1938. c w GREEN 2,108,884

CASH REGISTER Original Filed March 27, 1931 8 Sheets-Sheet 2 InventorCharles w. Green By @upM His Attorney c. W. GREEN 2 108 884+ CASHREGISTER Griginal Filed March 27, 1951 8 Sheets-Sheet i5 inventorCharles W. Green By M W Hi: Attorney W. GREEN CASH REGISTER False 221938.

Original Filed March 27, 1931 8 Sheets-Sheet 4 Inventor Charles W. GreenH is Attorney Feb. 22, 1938.

C. W. GREEN CASH REGISTER Original Filed Marph 27, i931 B'SheetS-Sheet 50 Charles W. Green H ii Attorney C. W. GREEN CASH REGISTER Feb. 22,1938.

8 Sheets-Sheet 6 Original Filed March 27, 1931 Inventor Charles W. GreenMM H is Attorney Feb. 22, 1938.

c. w. GREEN CASH REGISTER Original Filed March 27. 1931 8 SheetsSheet 7FIG. 9

g 33 M 3 .n 3

u H q. M 5 1o fiS 3 4 & MM 0 Hi2 M 5 a 3 M 1 00 4 F a 1 66 ll 3 4 2 P 2Inventor Charles W. Green His Attorney Feb. 22, 1938.

Original Filed March 27, 1951 C. W. GREEN CASH REGISTER 8 Sheets-Sheet 8Charles W. Green 350 310 am an 312 v 34a 3 D 360 324 235 233 I r" :1: Ii U17 I Inventor Hi1 Attorney .25 tial elements of which are set forthin the ap- Patented Feb. 22, 1933 2,108,884

UNITED STATES PATENT OFFICE CASH REGISTER Charles W. Green, Dayton,Ohio, assignor to The National Cash Register Company, Dayton, Ohio, acorporation of Maryland Original application March 27, 1931, Serial No.525,630. Divided and this application April 4, 1936, Serial No. 72,686

11 Claims. (01. 235-23) This invention relates to cash registers anddegrees and when a key in an amount bank has analogous devices, andparticularly to that type been depressed.

having a plurality of totalizers for registering Fig. 9 is a partialfront elevation showing the totals of various transactions entered bythe indifferential mechanism and a portion of the drive dividual clerks,and also having printing and infor the indicator mechanism. 5 dicatingmechanism to indicate data relating to Fig. 10 is a sectional view takenon line Ill-l0 such transactions, and is a division of the appliof Fig.'7, showing the indicator transmission cation for United States LettersPatent of Charles line broken away to more clearly show the direct W.Green, Serial No. 525,630, filed March 27, 1931 driving connections fromthe differential to the 10 now patent No. 2,063,031, which issuedDecember indicators. 10

8, 1936. General description The object of this invention is to providea novel indicating mechanism and controlling means therefor for suchtypes of machines.

A more specific object of this invention is to provide novel meansassociated with the indicators for positively actuating the indicatorsto indicate data corresponding to that set up on the keyboard of themachine, and to positively lock the indicators after they have beenpositioned under control of the keys.

With these and incidental objects in view, the invention includescertain novel features of construction and combinations of parts, theessen- Described in general terms, this divisional application relatesparticularly to indicator mechanisms under the control of banks of keys,and 15 for the purposes of this divisional case, it will be sufiicienthere to state that the differentials are controlled by several banks ofamount keys, a bank of clerks keys, and a bank of transaction keys, thegeneral locations of which are shown in section in Fig. 1.

These keys control differential mechanisms and, more specifically,differentially adjustable segments having associated therewith a seriesof connections for adjusting indicators.

The indicators provided in the illustrated machine are of the drum type,and are so arranged that the amount of each transaction entered in themachine, as well as a legend representing the clerk who entered thetransaction pended claims, and a preferred form or embodiment of whichis hereinafter described with reference to the drawings which accompanyand 'form part of this specification.

30 Of said drawings: 1

11s contractions View i e from 2 2;iiiiiitd iiitifitii tiit aii tifeifii pomlonuof me W removiad Showmg. genthe machine. This mechanism isso constructed eral g i g g q f mdlca'tors that the indicators will bemoved from one posiand.t e .eyboar r0 8 Same tion to another withoutfirst being returned to a 35 Flg. 2 1s a rear elevational view of themachine Zero or starting position with the back portion of the cabinetremoved, showing particularly the transmission lines to Framework Itreads correct The various parts of the machine are supported 40 by asuitable framework, comprising a base [0 40 Fig. 3 is a right-handelevation of the machine showing particularly the main operatingmechanism and the indicator flash mechanism.

Fig. 4 is a detail view of the amount differential operating cams.

Fig. 5 is a detail View of the clerks and transaction differentialoperating cams.

Fig. 6 is a section taken on line 66 of Fig. 1.

Fig. 7 is a partial elevational view showing the 5o differential andindicator mechanisms and a por- Opemiing mechanism 6 0f the y Section-The operating power is imparted to the various Fi 8 s an elevational v willustrating the mechanisms of the machine by a main operatingrespective positions of the parts in the differential shaft 20 (Figs, 2to 8, and 10), which is driven and indicator mechanisms when the mainoperby a hand crank 22 (Fig. 3) through the medium ating shaft has beenoperated substantially of gears 33, 34, and 35. 55

(Figs. 1, 2, 9, and 10) two side frames II and I2, and two intermediateframes l3 and I4, all attached to the base by suitable means.

The mechanisms contained in the machine are enclosed by a cabinet l8provided with suit- 45 able openings for receiving the key banks andother control mechanisms, as fully disclosed in the above mentionedparent case.

The shaft 2t may also be driven by an electric motor of the type fullyillustrated and described in the United States Patent No. 1,144,418,issued June 29, 1915, to Charles F. Kettering and William A. Chryst.

Keyboard The keyboard of the machine is comprised of seven banks ofamount keys 30 (Figs. 1, 7, and 8), one bank of clerks keys 4!, and onebank of transaction keys 42. The clerks and transaction keys are shownonly in section in Fig. 1. A motor bar 43 (Figs. 1 and 3) is providedfor effecting release of the machine. The keys of each bank aresupported in frames 44 mounted in the usual manner on cross rods dB and41.

For the purposes of this case it will be sufficient to state that eachbank of amount keys controls a zero stop pawl 12 (Figs. 7 and 8) throughthe medium of detents which are fully illustrated and described in theparent case.

Difierential mechanism The present machine is provided with a positivelyoperated differential mechanism for controlling and setting theindicators. As shown in Figs. 2, 4 and 6 to 8, a cam 23!! and itscompanion cam 2M are secured to the drive shaft 26 and cooperate withrollers 232 and 233 on arms 234 and 235 respectively of a. lever 236pivoted on a shaft I85. Integral with the lever 236 is a segmental gear238 meshing with a gear segment 239 secured to a shaft 240. Also securedto the shaft 249 a series of driving segments 24!, one for each bank ofamount keys.

Since the structure and operation of the driving segments and of thedifferential mechanism associated therewith are the same for all of theamount banks of keys, a brief description of the structure and operationof one will suffice for all, and, for the purposes of illustration, theunits bank differential mechanism will be used.

Pivot ed on the shaft 240 is a differential segment 2&2 carrying a pawl245 pivoted at 245'. This pawl has a projection 24% which normallyengages a notch 2 13 of its associated driving segment 2M. A projection24'! of the pawl is adapted to engage in any one of a series of notches258 in its corresponding differential latch retaining plate 6!.

In Figs. 6 and 7, the parts are shown in their normal positions, whereina nose 249 of the differential segment engages an arm of the zero stoppawl l2. Therefore, if no key in that bank is depressed upon operationof the driving shaft 20, the cams and 23! rock the lever 236 clock wise,whereupon the segmental gear 238 and segment 239 rock the shaft 260 andthe driving segment 24H counterclockwise. In this case, however, thediiferential segment 242 will be held against movement by its contactwith an arm 14 of the zero stop pawl '52, with the result that the pawl2415 will be disengaged from its driving segment 2 25, and theprojection 24'! of the pawl will enter the first notch 248 in the plate6|. The segments 2M will continue their downward movement until theyreach their limit of travel, after which the cams 23%) and 23! willreturn them to their normal positions, whereupon the notch 243 willagain register with the projection 246 of the pawl 2455 and will dropinto the notch by gravity.

When a key ill of an amount bank is depressed, the arm M of the zerostop pawl will be swung from the nose N9 of the diiferential segment 2:52, and the associated segment 2 will carry the diiferential segmentdownwardly until stopped by the particular key depressed.

When a key is depressed, the foot 58a (Figs. '7 and 8) on a cam plate 58associated therewith will close the first notch 248, which normally isadapted to receive the projection 24'! of the pawl 245 when the machineis operated with no key depressed in that bank. The lower end of eachkey has a cam face 255 and the forward end of the latch pawl 2 35 has anotch 25L Therefore, when the differential segment 242 is moveddownwardly by its driving segment 514i, the notch 25! engages the end ofthe depressed key, thus camming the pawl 245 clockwise, causing itsprojection M7 to enter the notch 24S adjacent the depressed key. In thismanner the differential segment 242 is disengaged from the drivingsegment 2d! and is held in adjusted position by the engagement of theprojection 24% on the latch pawl 2 55 with the concentric surface 244 ofthe driving segment 2 During the same operation of the machine, eachdriving segment is returned to normal position, thus causing aprojection 253 thereon to engage the projection 246 of its associatedpawl 245. By this action, the projection 2 56 of the pawl 255 willreenter the notch 243 of its driving segment 24!, and, consequently, theassociated differential segment 242 will be returned to home position.

From the above description. it can be clearly seen that during an itementering operation the differential segments 242 will first, bepositively adjusted by their segments 2M a distance deter" mined by therespective keys depressed, and then positively restored to their normalpositions.

Fig. 8 shows the parts associated with the units or penny bank of keysin operated position when the five-cent key has been depressed. The nose269 01" each differential segment 24?. swings between 2. relatedretaining plate 6i and the key spring retaining plate 55 (Fig. 1) of thenext adjacent key section. Thus, the differential scgments are preventedfrom moving laterally.

The differential mechanisms associated with the clerks and transactionbanks of keys are substantially the same as those associated with theamount banks, except that the driving segments for the clerks andtransaction differential seg: ments are not restored to normal positionssimultaneously with the restoration of the driving segments for theamount differential segments. The clerks and transaction banks of keysare not provided with zero stop pawls, since the differential segmentsfor those banks will be operated for each operation of the machine, asit requires the depression of a transaction key and a clerks key, incombination with the motor bar, to release the machine for operation.

As shown in Figs. 2, 9, and 10, there is a pair of driving segments 2 Hloose on the shaft 2&8 to actuate the clerks and transactiondifferential segments 242. A cam 236' (see also Fig. 5) and itscompanion cam 23! secured to the shat 2 through the rollers 254 and 251on the arms and 258 of a lever 256 pivoted on the shaft H85, and theactuating segments 259 and 2st! meshing with the gear segments 259 and250, actuate the driving segments 2M upon rotation of the main shaft 20to drive the clerks and transaction differential segments 242. Asmentioned above, the driving segments 2M remain in their operatedpositions while the driving segments 24! for the amount differentialsare restored to their normal positions. During a latter period in theoperation of the machine, the driving segments 24! are restored to theirnormal positions and likewise restore their respective differentialsegments 242 to normal positions.

Indicator mechanism The indicators provided in the illustrated machineare of the drum type, and are arranged so as to display, at both thefront and rear of the machine, the indicia corresponding to each keydepressed. The amount and clerks indicators 3!!! and 3!! respectively(Figs. 1 and 2), are arranged in pairs and are simultaneously operatedby mechanism which will be described in detail, hereinafter. Onetransaction indicator 3!2 is provided and is positioned between thefront and rear indicators. This indicator is provided with two similarsets of transaction indici-a, one for displaying, at the front of themachine, the indicia representing the kind of transaction entered in themachine and the other for displaying similar information at the rear ofthe machine.

Referring more particularly to Figs. 6 to 10, it will be seen that thereis one indicator differential segment 3!3 and associated mechanism foreach bank of keys. Since the structure and operation of each are thesame, a description'of one will suffice for all. For the purpose ofillustration, a description of the mechanism associated withthe unitsorder will be given.

Each indicator differential segment 3l3 is pivoted on a shaft 3!4journaled in the main supporting frames ll, !2 and I4, and isdifferentially actuated by a beam 3|5 pivoted at 3!6 to a stud providedon a corresponding differential segment 242. A cam slot 3 I 1 isprovided in the rearwardly extending portion of each beam. 3!5 which receives a roller 3!3 provided at the lower forward end of a correspondingindicator differential segment 3!3. The lower edge of each segment 3!3is provided with a series of serrations 3 9 (Fig. 6) which are adaptedto be engaged by a corresponding holding pawl 320. Pawls 320 are pinnedto a shaft 32! which is journaled in supporting frames !2 and I4. An arm322 carrying a roller 323 at the forward end thereof is also pinned toshaft 32!. A cam 324 fixed to the main driving shaft 20 engages roller323 and is provided for the purpose of imparting a rocking movement toall of the arms 32!! to engage them with their respective serrations319, aforesaid, and thus positively hold segment 3!3 in adjustedposition. Also pinned to shaft 20 is a cam 325 which engages a roller326 provided at the lower end of an arm 32'! fixed to a shaft 328, whichshaft is also journaled in supporting frames !2 and !4. Also fixedtoshaft 328 are a series of alining pawls 329 which are adapted toengage in the serrations provided in the alining wheels 33!! attached togears 33! for adjusting the indicator drums.

As shown in Figs. 6 and 10, a cam 332 pinned to shaft 20 engages roller333 provided at the lower end of an arm 334 pinned to a shaft 335, whichshaft is journaled in supporting frames !2 and !4. Also pinned to shaft335 are a series of two-arm. levers 336, one for each indicator unit.The forward arm 33'! of lever 336 is. provided with a cam. face 338which is adapted to engage a pin 339 carried by a segmental gear 340.Segmental gear 340 is pivoted at 34! to its respective indicatordifferential segment 3!3. The upper rearwardly extending arm 342 oflever 335 carries a pin 343 which is adapted to be engaged by an arm 344of a two-arm lever 345 loosely mounted on shaft 3I4. The arm 344 isformed with a cut-away portion and an abutting or locking surface whichengages the pin 343 to lock the actuating segment 349 when the pin 339thereon has been brought to its normal position. The cut-away portion ofarm 344 allows the twoarm lever 345 to be rocked clockwise during asetting operation if the adjustment of 343 so requires. The forwardlyextending arm 345 of iever 345 is adapted to also engage the pin 339provided on segment 340.

The above described parts are so constructed and arranged thatimmediately upon rotation of shaft 20 a cut-away portion of earn. 324will register with roller 323 on arm 322 and thereby permit all of thealining pawls 329 to drop out of engagement with the indicatordifferential segments 3!3. At substantially the same time, or shortlythereafter, the differential segments 242 will be actuated by theirrespective segments 24! with the result that the beams 3!5 will beactuated in a counter-clockwise direction about shaft 240. By thismovement each beam will be moved about shaft 246, as a pivot, a distancecommensurate with the value of the particular key depressed. During thismovement, cam 3!! will actuate its corresponding differential segment3!3 a corresponding amount. When the differential segments 3!3 are thuspositioned, cam. 324

will engage roller 323 and rock the alining pawls o 320 into engagementwith their respective indicator differential segments 3!3, therebyholding them in adjusted position. At substantially the same time thatthe holding pawls 329 are disengaged from the indicator differentialsegments 3!3, a pin 34'! (Fig. 10) on the cam 332 will engage a tail 343provided on arm 334 and will rock shaft 335 in a counter-clockwisedirection there by bringing pin 343 out of engagement with the abuttingsurface on arm 334 of lever 345. The indicator differentials may now bemoved in either direction.

It is clear from the construction of the parts, that when they are inthe position shown in Figs. 6 and I. the indicators as well as theactuating parts are locked against operation due to the engagement ofarms 344 and 343 of lever 345, with pins 339 and 343 and the engagementof the forward arms 33'! of levers 333 with the pins 339. However, wheneach lever 333 is rocked to the position shown in Fig. 8, due to thecut-away portion of arm 344, the corresponding two-arm lever 3 55 willbe free to move, thereby permitting movement of the indicatordifferential segments 3l3 in either direction. Before the differentialsegments 3!3 have been thus positioned, earn 325 will have releasedroller 326 and thereby rock the indicator alining pawls 329 out ofengagement with their respective alining wheels 3313. Upon furtheroperation of the main driving shaft 20 the cam 332 operating on theroller 333 attached to the lower end of lever 334 will rock the shaft335 in a clockwise direction thereby causing the cam face 338 providedon lever 336 to engage pin 339 and rock segment 333 on its pivot 34!.The gear segment 34!! meshes with a pinion 349 (Fig. 8) attached to acorresponding large gear 33! (Fig. 6) which in turn meshes with a gear353 attached to a corresponding indicator drum. If the arm 345 has beenrocked clockwise, the pin 343 will engage the cut-away portion of arm344 to rock it to its normal position, in which pin 343 may engage theabutting surface on arm 344.

From the construction of the parts just described, it is seen that thepin 339 will occupy the same position at the end of each operation ofthe machine. In this manner the indicators will be positioned the properamount. It will be remembered that when an indicator differis positionedthe manner aforesaid, it locked in adjusted position by locking pawlThus, when the differential segment 242 associated therewith is returnedto normal position the pivot point of beam 3! 5 will be restored tonormal position with the result that the beam will fulcrum about itscorresponding pin 393 as a pivot, thereby moving the beam away fromshaft 240.

At the beginning of a subsequent operation of the machine, it isnecessary to restore the beams 355 to normal in order to properlyposition the indicator differentials to a new position. Restoration ofthe beams takes place simultaneously with the movement of thedifferential segments after the locking pawls 326 have been moved out ofengagement with their indicator differential segments 3!3. Thus, bothmovements are effected at substantially the same time with the resultthat the indicator differential is moved a distance corresponding to theresultant of the two movements of the beam, or the resultant of movementof its corresponding beam 3!5 toward the shaft 240 and also of themovement thereof about shaft 24!] as a pivot.

In order to restore the beams 3!5 into engagement with shaft 246 thefollowing mechanism is provided:

Fixed to a shaft 35!, Figs. 6 and 7, and journaled in side frames I2 andI4 is an arm 352 carrying a roller 353 at the forward end thereof whichroller operates in a cam slot 354 provided in a segmental plate 355fixed to shaft 260. Also pinned to shaft 35! are a series of curved arms355, one for each beam 3I5.

From this construction it is seen that when shaft 233 is rockedcounterclockwise the cam plate 355 will rock the shaft 35!counterclockwise thereby bringing the end portions of arms 356 intoengagement with the upper surface of their respective beams 3!5. At thistime, it will be remembered the indicator differential segments 353 havebeen released for operation and this motion is transmitted to therespective segments M3 by cam slot 3!! acting on rollers 3! 8 of eachindicator differential segment. When shaft 266 is returned by rocking ina clockwise direction the arms 356 will be moved away from the beams andthe latter are then permitted to again move away from the shaft 26!! topermit the indicator differentials 3!3 associated therewith to remain inadjusted positions. By this construction it is seen that the indicatorsare moved from one position to another without first returning them to azero or starting position. This constructional arrangement obviouslyeliminates considerable stress on the parts and provides an efficientoperating mechanism for the indicators.

1 order to adjust the indicators so that the cia may be viewed from therear of the machine, a transmission line is provided. Referring to Figs.2, 6 and 10, it will be seen that a plurality of shafts 366 are providedwhich shafts are journaled in supporting frames H, I2 and i i (Fig. 6).These shafts are mounted in an are about gears 335, as shown in Figs. 6and '7. A pinion 35! is pinned to each shaft 366, which pinion mesheswith a corresponding gear 33!. Spaced from each pinion 36! on itsrespective shaft 366 is another pinion 362 which meshes with a similargear 33! for adjusting a corresponding rear indicator drum. There is onesuch shaft and pair of pinions for each amount indicator and also onefor the clerks indicator. Thus, it is clear that when the gears 33! areactuated in the manner previously described, this movement throughpinions 36! and. 362 is transmitted to a similar gear 33! associatedwith the rear indicators. It will be noted from Fig. 2 that the rearindicator drum for the unit denominational order is moved through asleeve 364' in order to avoid the necessity of an extension of itsrespective shaft 366 to the right of side frame II.

It is desirable to conceal the indicators during adjustment thereof andto this end a flash 363 (Figs. 2 and 3), is provided. This flash ismounted on indicator supporting shaft 364 journaled in side frames ll,!2 and M. This concealing means is in the form of a bail having arcuateshaped concealing portions 365 located at substantially diametricallyopposite sides of the drum. These concealing portions are attached to apair of arms 366 at each end thereof. Attached to one of the arms 366adjacent the supporting frame !2 is a pitman 36'! which is provided witha slot 368 near its lower end, which receives a pin 369 provided in sideframe l2. The lower end of pitman 361 is provided with a cam face 313which is adapted to be engaged by stud 3f! fixed to gear 33. A spring359 tends to rock the concealing member in a clockwise direction. Fromthe description of the above mechanism it is clear that when gear 33 isrotated in the direction of the arrow upon operation of the main drivingshaft 26, stud 33! will be moved out of engagement with cam 31!! andpitman 36'! will be permitted to drop, thereby bringing the concealingportions 365 into position to conceal the indicators. Toward the end ofan operation of the machine, stud 31! will again engage cam 31!] therebymoving pitman 36'! upwardly to move the concealing portions 365 toinoperative positions. The slot 368 is so constructed as to limit themovement of the concealing member in either direction.

Summary of operation A brief description of the operation of themechanism will now be given.

When one of the amount keys is depressed, and the machine released foroperation by depression of the motor bar 43, the amount driving segments26! actuate the differential segments 262 until the pawls 2353 contactthe ends of the depressed keys, whereupon the segments 242 aredisengaged from the segments 24!, which continue downwardly until theyreach the limit of their movement.

In a like manner the driving segments 24! for the clerks and transactionbanks actuate the differential segments 2 32 associated therewith undercontrol of the keys depressed in those banks.

Through the beams 3!5, the indicator differential segments 3I3 are setaccording to the values of the keys depressed, after which the lockingpawls 326 (they having first been disengaged from the segments 3!3) areagain moved into engagement therewith to hold them in their adjustedpositions. Consequently, when the segments 232 are restored, the beams3I5 fulcrum around the pins or rollers EH8, thus leaving the indicatorsegments 3l3 remaining in their adjusted positions. The gear segments340 are now operated by the train of mechanism including the cams 332,arm 334, shaft 335, and levers 336, whereby the segments 340, throughthe gears 349 and 33! adjust the related indicators to the positionscorresponding to the keys depressed.

Atthe same time, motion is transmitted from. the front set of indicators310 to the rear set of indicators 3H1 by the series of transmissionshafts 360 and pinions 36l and 362, shown particularly in Fig. 4.

While the form of mechanism herein shown and described is admirablyadapted to fulfill the objects primarily stated, it is to be understoodthat it is not intended to confine the invention to the one form ofembodiment herein disclosed, for it is susceptible of embodiment invarious forms, all coming within the scope of the claims which follow.

What is claimed is:

1. In a machine of the class described, the combination of a series ofkeys; a differentially adjustable actuator adapted to be controlled asto extent of adjustment by said keys; a pivotally mounted driven member;a beam supported by said actuator provided with means for adjusting saiddriven member, an indicator; a segment carried by said driven memberhaving a projection thereon; a two-arm lever, one arm thereof engagingsaid projection; and a second two-arm lever, one arm thereof beingprovided with a cam surface for engaging said projection, a second armthereof having a projection adapted to engage the other arm of saidfirst mentioned lever, said parts being so constructed that uponoperation of the machine, said second mentioned lever will be actuatedto adjust said segment toposition said indicator, the projection of saidsegment being restored to a normal point at the end of each operation ofthe machine.

2. In a machine of the class described, the combination of a series ofkeys, a pivoted actuator common-to all of said keys and adapted to becontrolled as to extent of travel by said keys; a driven member; meansfor pivotally supporting said driven member; a beam supported by saidactuator for adjusting said driven member; means for holding said drivenmember in adjusted position; a gear mounted on the supporting means forsaid driven member; means carried by said driven member for actuatingsaid gear; and means for positively actuating and locking said lastmentioned means.

3. In a machine of the class described, the combination of a series ofkeys, a pivoted actuator common to all of said keys and adapted to becontrolled as to extent of travel by said keys; a pivotally supporteddriven member; supporting means for the driven member; a beam supportedby said actuator for adjusting said driven member; means for holdingsaid driven member in adjusted position; a gear concentric with thepivot of said driven member; an actuating segment for said gearpivotally supported on said driven member; a pair of two-arm levers, oneof said levers being pivoted on the supporting means for said drivenmember, the other being pivoted on a shaft adjacent thereto; and meansfor driving said other lever, said levers being so constructed andarranged that upon operation of the driving means for said other lever,said segment will first, be positively actuated, and then looked inoperated position.

4. In a machine of the class described, the combination of a series ofkeys; a differentially adjustable actuator adapted to be controlled asto extent of adjustment by said keys; a pivotally mounted driven member;a beam supported by said actuator provided with a cam for adjusting saiddriven member; an indicator; a segment carried by said driven member foradjusting said indicator, said segment being provided with a projection;a two-arm lever, one arm thereof engaging said projection; and a secondtwo-arm lever, one arm thereof being provided with a cam surface forengaging the projection on said segment, the second arm thereof having aprojection adapted to engage the other arm of said first mentionedlever, said parts being so constructed that upon an operation of themachine, after said driven member has been adjusted by said beam, saidsecond mentioned lever will be actuated to adjust said segment toposition said indicator.

5. In a machine of the class described, the combination of a series ofkeys, a differentially adjustable actuator adapted to be controlled asto the extent of adjustment by said keys; a pivotally supported drivenmember, an indicator, a beam supported by' said actuator for adjustingsaid driven member a distance commensurate with the movement of saidactuator, a segmental gear pivotally supported on said driven member;connections from said segmental gear to said indicator; a projectioncarried by said segmental gear adapted to be engaged by one arm of atwo-arm lever; the other arm thereof being provided with an abuttingsurface and a cut away portion; a projection carried at the outer end ofone arm of a second two-arm lever adapted to engage said abuttingsurface, the other arm thereof being provided with a cam portion forengaging the projection of said segmental gear, said parts being soconstructed that during adjustment of said driven member by said beam,the projection carried by said second mentioned lever can engage in thecut away portion of said first mentioned lever; means for holding saiddriven member in adjusted position; and means for actuating said secondmentioned two-arm lever to first, cause adjustment of said segment, andthen cause locking thereof in adjusted position.

6. In a machine of the class described, the combination of a series ofkeys; a differentially adjustable actuator controlled by said keys; anindicator; a driven member; means intermediate said actuator and saiddriven member to operate the latter under control of the actuator;minimum movement actuating means for moving said indicator to exhibitdata as set up on the keys; and means for operating said minimummovement actuating means to set the indicator directly from a previouslyset position to a new position under control of said driven member whilesaid driven member remains stationary.

7. In a machine of the class described, the combination of a series ofkeys; a differentially adjust-able actuator controlled by said keys; anindicator; a driven member; means pivoted to said actuator and connectedto said driven member for operating the latter under control of theactuator; minimum movement actuating means for said indicator, includingan element carried by said driven member; and a plurality of members foroperating said minimum movement actuating means to set the indicatordirectly from a previously set position to a new position under controlof said driven member.

8. In a machine of the class described, the combination of a series ofkeys; a differentially adjustable actuator controlled by said keys; anindicator; a pivoted driven member; means intermediate said actuator andsaid driven member for operating the latter under control of theactuator; means pivoted on one end of said driven member for actuatingsaid indicator; and means for operating said pivoted means to set theindicator under control of said driven member.

9. In a machine of the class described, the combination of a series ofkeys; a differentially adjustable actuator controlled by said keys; anindicator; a pivoted driven member; means for differentially positioningthe driven member under control of said actuator; a support for saiddriven member; gears mounted on said support for driving the indicator;and means pivoted on the driven member adjacent one end thereof foroperating said gears to position the indicator under control of saiddriven member.

10. In a machine of the class described, the combination of a series ofkeys; a differentially adjustable actuator controlled by said keys; anindicator; a pivoted driven member; means controlled by said actuatorfor differentially positioning said driven member; gears for actuatingsaid indicator; a device pivoted on said driven member for operatingsaid gears; and means including a plurality of levers and a projectionon the device and one on one of said levers, said levers and projectionscooperating to actuate said device and to lock said device afteractuation thereof.

11. In a machine of the class described, the combination of a series ofkeys; a differentially adjustable actuator controlled by said keys; anindicator; a driven member; means controlled by said actuator fordifferentially positioning said driven member; means carried by saiddriven member and adapted to be differentially positioned therewith; andmeans for restoring a portion of the last mentioned means to normalposition independently of said driven member for setting the indicatorunder control of the driven member and for locking said portion of thelast 20 mentioned means in its normal position.

CHARLES W. GREEN.

